M5 Titanium Bolt

Certified Grade 5 Ti-6Al-4V titanium M5 bolts engineered for bicycle cockpits, 6-bolt disc brake rotors, seatposts, bottle cages, and motorcycle fairing mounts. Known as the quintessential thread size in performance cycling and lightweight motorsport, our M5 titanium screws feature CNC-rolled M5 × 0.8mm threads, offering ≥950 MPa tensile strength to match Class 10.9 steel while reducing rotating and unsprung mass by 45%. From low-profile Torx T25 disc rotor bolts to captive-washer stem clamp hardware, each bolt provides total atmospheric corrosion immunity and fatigue resistance.

Specialized M5 Head Architectures

  • Torx T25 Button Head: Universal 6-bolt bicycle disc brake rotor mounting compatible with Shimano, SRAM, Magura, Formula, and Hope rotors.
  • DIN912 Socket Cap & DIN7991 Countersunk: General mechanical assemblies (10–70mm) and flush-mount aerodynamic brackets.
  • Tapered & Chamfered Stem Bolts with Captive Ti Washers: Integrated washers prevent drop-off and eliminate local gouging on expensive carbon and aluminum stems.
  • Seatpost Kits & Bottle Cage Screws: Dedicated concave washer sets, barrel nuts, and ultra-low profile umbrella fasteners.

Related Fasteners & Technical Guides

Need larger hardware? Browse our companion M6 Titanium Bolts for handlebar clamps and calipers, or pair with our Titanium Flange Nuts. Read our engineering whitepaper: The Ultimate Guide to Choosing Titanium Fasteners.

Frequently Asked Questions

What is the proper torque spec for M5 bicycle stem and disc rotor bolts?

Standard dry torque is 5.5–6.0 N·m (48–53 in-lb). When using anti-seize paste on threads, tighten to 4.2–4.8 N·m (37–42 in-lb) to avoid over-tensioning the bolt shank.

Why do Tianswer M5 stem bolts feature captive washers?

The captive washer cannot separate or fall into internal bike routing during assembly, and it provides smooth, frictionless bearing rotation against faceplates to ensure accurate clamping preload.

Are these M5 rotor bolts safe for downhill and e-MTB braking?

Yes. Precision CNC rolled threads and certified Ti-6Al-4V alloy handle intense thermal cycling and high shear torque under aggressive braking without thermal loosening.